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Imported Upstream version 5.18.0.167

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Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions
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24
external/llvm/test/Transforms/LICM/2003-02-27-PreheaderProblem.ll vendored
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; Here we have a case where there are two loops and LICM is hoisting an
; instruction from one loop into the other loop! This is obviously bad and
; happens because preheader insertion doesn't insert a preheader for this
; case... bad.
; RUN: opt < %s -licm -loop-deletion -simplifycfg -S | \
; RUN: not grep "br "
define i32 @main(i32 %argc) {
; <label>:0
br label %bb5
bb5: ; preds = %bb5, %0
%I = phi i32 [ 0, %0 ], [ %I2, %bb5 ] ; <i32> [#uses=1]
%I2 = add i32 %I, 1 ; <i32> [#uses=2]
%c = icmp eq i32 %I2, 10 ; <i1> [#uses=1]
br i1 %c, label %bb5, label %bb8
bb8: ; preds = %bb8, %bb5
%cann-indvar = phi i32 [ 0, %bb8 ], [ 0, %bb5 ] ; <i32> [#uses=0]
%X = add i32 %argc, %argc ; <i32> [#uses=1]
br i1 false, label %bb8, label %bb10
bb10: ; preds = %bb8
ret i32 %X
}